A lot of good points in this worth thinking about. I would counter that to make up for lack of speed etc.. would be if it had a size 9 FSD (let's skip 8) that would enable it to have a jump range of 150Lyrs fully laden, making it a long distance hauler, perfect for CG hauling or any other situation where a mass amount of materials are necessary, like for base building.
Also, some of the module space could be mitigated by making Size 9 Cargo Racks, which would allow for masses of cargo but would limit the amount and effectiveness of HRP/MRPs.
I think FC are already more than suited for such massive cargo hauling, they can carry easly 20k+ tons of any cargo, and having jump range of 500ly, all needed is load it, then order to jump and park next to destination. Of course during busy CG or hotspots, it can be a pain to have free FC slot in system, but once it manages to secure one, unloading single fully laden FC by its owner alone is enough be in top 10% during most CG's, while top 10 are usually ones who are capable doing that mutiple times per CG. The ones who are most efficent at this, probly they dont wanna anything worse to fly than they have already to work with.
And probly one of reasons why Fdevs dont see need for bigger cargo haulers than we have already (T9 and cutter wich both are already plenty big enough). I might also add, that FC also serves thier roles as "base" with that diffrence its mobile one (along your entire fleet + all owned modules as bonus).
Its one of main reasons why I am so sceptic about base buliding, since like mentioned, FC are already here, and they are actually "usefull" in many areas be it massive cargo storage or even as base of operations among other things. I just cannot image having static, planetary base with similar functions that of FC, but without it being able to move - I dont see point for that, gameplay wise apart of simple novelty of having planetary base by itself that surely would be also similar with Up-keep mechanics.
By "FC are here already" I mean, its simply that if there is something that already fulfill certain on-going needs of "crowd", then its highly unlikely to something else similar being added. History of this game develpment and how its features being added, its enough proof, and since being bit too hyped about something, sadly often ends being dissapointed a bit once "desired" feature came out.
Anyway, like someone else already mentioned, its like what, 9 or already 10 years since it was teased? Hence "ship that got under rug, and never came out since" indeed.
this argument kinda falls flat to me since i didnt really liked Sammarco's vision, not for his version of PP end even less for things like multicrew
on the other hand, the current crew will get us 4 ships this year
Its opposite for me... Times and era when Sammarco and Brookes was around, was most "fun" I guess? A lot was going on at time, and new features (albeit not perfect) came one after another, in much more regular pace and intensity than it does currently, and ships where regulary being added as well, and overall fdevs was more "open" and more vocal about game and its directions. Quite unlike now, where we have no idea whats coming next becasue of current crew of Fdev trying make some kind of "hype" by "secret, exiting new features" but its not really working as it should.
Aint he was already gone from elite for year or two before you ever begin Your journey with elite? I not trying be mean here, but since when you started, "Sammarco's vision" was already song of past, and powerplay form was more like M.Brookes vision, than Sammarco's Imho. But I agree on mutlicrew along CQC, that is both disasters than should never came out of "shelf". Needless to say, I think if You would be around time when these two nice guys had lead developlent of elite, your opinion surely would be diffrent, because you would be "overjoyed" with amount of new things every few months, wich since 2019, became much, much more rarer, where If I am not mistaken, you did started right?
He also was atleast one and only Fdev who ever tried to balance endgame PVP with enginering and adress ongoing issues with it, but sadly some of ideas at end never came out of beta, such as shield stack dimishing returns, wich would certainly shape meta very diffrently than it went, and far as I am aware, every PVPer including myself from that era, actually wanted that change to make into live. It was one of main reasons for famous "PVP vs PVE" debate, if not mistaken.. (not like you would care about that, it is worth to point out regardless)